This diagram from a 1967 documentation shows how to switch high voltage neon lamps with 5V TTL outputs. The circuit can be adapted to function as a shield.
Other operational amplifiers from the same family such as MC34002, MC35001, MC34004 and MC35004 can...
This oscillator uses germanium transistors. It was found in the Radio Electronics magazine of may...
This circuit is from a documentation on Motorola interfacing techniques from 1975. The Darlington may be...